/*
MAHLIS PUBLIC STYLESHEET

This dependency-free stylesheet supports readable public documents,
responsive navigation, keyboard access, document-control metadata,
browser printing, and reduced-motion preferences.
*/


/* -------------------------------------------------------------------------
   DESIGN TOKENS
   ------------------------------------------------------------------------- */

:root {
    --colour-ink: #10231f;
    --colour-muted: #51645f;
    --colour-paper: #f7faf8;
    --colour-card: #ffffff;
    --colour-line: #cad8d3;
    --colour-primary: #0b6b57;
    --colour-primary-dark: #074c3e;
    --colour-soft: #e5f4ef;
    --colour-focus: #ffbf47;
    --page-width: 76rem;
    --content-width: 56rem;
    --radius-small: 0.4rem;
    --radius-medium: 0.75rem;
    --radius-large: 1rem;
    --shadow-card: 0 0.5rem 2rem rgba(16, 35, 31, 0.06);
}


/* -------------------------------------------------------------------------
   DOCUMENT FOUNDATION
   ------------------------------------------------------------------------- */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    color-scheme: light;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    background: var(--colour-paper);
    color: var(--colour-ink);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1rem;
    line-height: 1.7;
}

img,
svg,
video {
    display: block;
    max-width: 100%;
    height: auto;
}


/* -------------------------------------------------------------------------
   SHARED PAGE WIDTH
   ------------------------------------------------------------------------- */

.shell {
    width: min(calc(100% - 2rem), var(--page-width));
    margin-inline: auto;
}


/* -------------------------------------------------------------------------
   KEYBOARD SKIP LINK
   ------------------------------------------------------------------------- */

.skip-link {
    position: absolute;
    top: 0;
    left: -9999px;
    z-index: 1000;
    padding: 0.75rem 1rem;
    background: var(--colour-card);
    color: var(--colour-ink);
    font-weight: 700;
    text-decoration: none;
}

    .skip-link:focus {
        top: 1rem;
        left: 1rem;
        outline: 0.2rem solid var(--colour-focus);
        outline-offset: 0.15rem;
    }


/* -------------------------------------------------------------------------
   LINKS AND KEYBOARD FOCUS
   ------------------------------------------------------------------------- */

a {
    color: var(--colour-primary);
    text-decoration-thickness: 0.1em;
    text-underline-offset: 0.2em;
}

    a:hover {
        color: var(--colour-primary-dark);
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    [tabindex]:focus-visible {
        outline: 0.2rem solid var(--colour-focus);
        outline-offset: 0.2rem;
    }


/* -------------------------------------------------------------------------
   SITE HEADER AND PRIMARY NAVIGATION
   ------------------------------------------------------------------------- */

.site-header {
    background: var(--colour-ink);
    color: var(--colour-card);
    border-bottom: 0.25rem solid var(--colour-primary);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding-block: 1rem;
}

.brand {
    flex-shrink: 0;
    color: var(--colour-card);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    text-decoration: none;
}

    .brand:hover,
    .brand:focus-visible {
        color: var(--colour-card);
    }

.nav-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.65rem 1.1rem;
}

    .nav-links a {
        display: inline-block;
        padding: 0.25rem 0;
        color: var(--colour-card);
        font-weight: 600;
    }

        .nav-links a:hover {
            color: var(--colour-focus);
        }


/* -------------------------------------------------------------------------
   MAIN CONTENT
   ------------------------------------------------------------------------- */

main {
    min-height: 60vh;
    padding-block: clamp(2rem, 5vw, 4rem);
}

.content-card {
    width: min(100%, var(--content-width));
    margin-inline: auto;
    padding: clamp(1.25rem, 4vw, 3.25rem);
    overflow-wrap: anywhere;
    background: var(--colour-card);
    border: 0.0625rem solid var(--colour-line);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-card);
}


/* -------------------------------------------------------------------------
   TYPOGRAPHY
   ------------------------------------------------------------------------- */

h1,
h2,
h3,
h4 {
    color: var(--colour-ink);
    line-height: 1.2;
}

h1 {
    margin-top: 0;
    margin-bottom: 1.25rem;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
}

h2 {
    margin-top: 2.5rem;
    padding-bottom: 0.35rem;
    color: var(--colour-primary-dark);
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
    border-bottom: 0.125rem solid var(--colour-soft);
}

h3 {
    margin-top: 1.75rem;
    font-size: clamp(1.15rem, 2vw, 1.35rem);
}

h4 {
    margin-top: 1.5rem;
    font-size: 1.1rem;
}
/*
Article-list titles need a restrained scale because they are links inside
summary cards, not primary page headings.
*/
.article-summary h2 {
    margin-top: 0;
    font-size: clamp(1.25rem, 2.25vw, 1.6rem);
    line-height: 1.3;
}

p,
ul,
ol,
blockquote,
table {
    margin-top: 1rem;
    margin-bottom: 1rem;
}

ul,
ol {
    padding-left: 1.5rem;
}

li + li {
    margin-top: 0.35rem;
}

strong {
    font-weight: 750;
}

small,
.small {
    color: var(--colour-muted);
    font-size: 0.9rem;
}


/* -------------------------------------------------------------------------
   QUOTATIONS
   ------------------------------------------------------------------------- */

blockquote {
    margin-inline: 0;
    padding: 1rem 1.25rem;
    background: var(--colour-soft);
    border-left: 0.3rem solid var(--colour-primary);
    border-radius: var(--radius-small);
}

    blockquote > :first-child {
        margin-top: 0;
    }

    blockquote > :last-child {
        margin-bottom: 0;
    }


/* -------------------------------------------------------------------------
   TABLES
   ------------------------------------------------------------------------- */

table {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    border-collapse: collapse;
    border-spacing: 0;
}

thead {
    background: var(--colour-soft);
}

th,
td {
    min-width: 9rem;
    padding: 0.75rem;
    vertical-align: top;
    text-align: left;
    border: 0.0625rem solid var(--colour-line);
}

th {
    color: var(--colour-ink);
    font-weight: 750;
}


/* -------------------------------------------------------------------------
   CODE AND TECHNICAL TEXT
   ------------------------------------------------------------------------- */

code {
    padding: 0.1rem 0.3rem;
    overflow-wrap: anywhere;
    background: var(--colour-soft);
    border-radius: var(--radius-small);
    font-family: "Cascadia Code", "Consolas", monospace;
    font-size: 0.95em;
}

pre {
    max-width: 100%;
    padding: 1rem;
    overflow-x: auto;
    background: var(--colour-ink);
    color: var(--colour-card);
    border-radius: var(--radius-medium);
}

    pre code {
        padding: 0;
        background: transparent;
        color: inherit;
    }


/* -------------------------------------------------------------------------
   DOCUMENT CONTROL INFORMATION

   The metadata block gives public readers visible version, status, ownership,
   and review information for each controlled Markdown document.
   ------------------------------------------------------------------------- */

.document-control {
    margin-top: 4rem;
    padding-top: 1rem;
    border-top: 0.2rem solid var(--colour-primary);
}

    .document-control h2 {
        margin-top: 1rem;
    }

.document-metadata {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-block: 1.5rem;
}

    .document-metadata > div {
        min-width: 0;
        padding: 0.9rem;
        background: var(--colour-soft);
        border: 0.0625rem solid var(--colour-line);
        border-radius: var(--radius-small);
    }

    .document-metadata dt {
        color: var(--colour-muted);
        font-size: 0.85rem;
        font-weight: 700;
        letter-spacing: 0.03em;
        text-transform: uppercase;
    }

    .document-metadata dd {
        margin: 0.25rem 0 0;
        overflow-wrap: anywhere;
        color: var(--colour-ink);
        font-weight: 650;
    }

.print-guidance {
    margin-top: 1.5rem;
    padding: 0.85rem 1rem;
    color: var(--colour-muted);
    background: var(--colour-paper);
    border-left: 0.25rem solid var(--colour-primary);
}


/* -------------------------------------------------------------------------
   SITE FOOTER
   ------------------------------------------------------------------------- */

.site-footer {
    padding-block: 2.5rem;
    background: var(--colour-card);
    border-top: 0.0625rem solid var(--colour-line);
}

    .site-footer nav {
        display: flex;
        flex-wrap: wrap;
        gap: 0.35rem 0.6rem;
        margin-block: 1rem;
    }

    .site-footer p {
        max-width: 62rem;
    }


/* -------------------------------------------------------------------------
   TABLET AND NARROW DESKTOP LAYOUT
   ------------------------------------------------------------------------- */

@media (max-width: 52rem) {
    .nav {
        align-items: flex-start;
        flex-direction: column;
    }

    .nav-links {
        width: 100%;
        justify-content: flex-start;
    }
}


/* -------------------------------------------------------------------------
   MOBILE LAYOUT
   ------------------------------------------------------------------------- */

@media (max-width: 36rem) {
    .shell {
        width: min(calc(100% - 1.25rem), var(--page-width));
    }

    .nav-links {
        flex-direction: column;
        gap: 0.2rem;
    }

        .nav-links a {
            width: 100%;
            padding: 0.45rem 0;
        }

    .content-card {
        padding: 1.1rem;
        border-radius: var(--radius-medium);
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        margin-top: 2.25rem;
    }

    .document-metadata {
        grid-template-columns: 1fr;
    }
}


/* -------------------------------------------------------------------------
   PRINT OUTPUT

   Navigation and website footer are removed from printed controlled
   documents. Document metadata remains visible as part of the record.
   ------------------------------------------------------------------------- */

@media print {
    @page {
        margin: 1.8cm;
    }

    body {
        background: var(--colour-card);
        color: #000000;
        font-size: 11pt;
    }

    .skip-link,
    .site-header,
    .site-footer,
    .print-guidance {
        display: none;
    }

    main {
        width: 100%;
        padding: 0;
    }

    .content-card {
        width: 100%;
        max-width: none;
        padding: 0;
        border: 0;
        box-shadow: none;
    }

    a {
        color: #000000;
        text-decoration: underline;
    }

    table {
        display: table;
        overflow: visible;
    }

    .document-control {
        margin-top: 2rem;
    }

    .document-metadata {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

        .document-metadata > div {
            background: transparent;
            border: 0.0625rem solid #777777;
        }

    h1,
    h2,
    h3,
    h4 {
        break-after: avoid;
    }

    table,
    blockquote,
    pre,
    .document-metadata > div {
        break-inside: avoid;
    }
}


/* -------------------------------------------------------------------------
   REDUCED MOTION
   ------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}